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22 Cards in this Set
- Front
- Back
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Temperature |
the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch. |
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Heat |
the quality of being hot; high temperature. |
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Thermal contact |
In physics, thermal contact conductance is the study of heat conduction between solid bodies in thermal contact |
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Thermal equilibrium |
The condition under which two substances in physical contact with each other exchange no heat energy. |
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Internal energy |
the energy in a system arising from the relative positions and interactions of its parts. |
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Calorie |
the energy needed to raise the temperature of 1 gram of water through 1 °C |
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Kilocalorie |
a unit of energy of 1,000 calories (equal to 1 large calorie). |
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Specific heat capacity |
the heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree). |
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Conduction |
the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material. |
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Insulators |
a thing or substance used for insulation, in particular. |
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Convection |
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat. |
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Radiation |
the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization. |
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Radiant energy |
Radiant energy is energy that travels by waves or particles, particularly electromagnetic radiation such as heat or x-rays. |
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Newton's Law of Cooling |
a statement in physics: the rate at which an exposed body changes temperature through radiation is approximately proportional to the difference between its temperature and that of its surroundings. |
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Greenhouse effect |
the trapping of the sun's warmth in a planet's lower atmosphere due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface. |
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Global warming |
the trapping of the sun's warmth in a planet's lower atmosphere due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface. |
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Absolute zero |
the lowest temperature that is theoretically possible, at which the motion of particles that constitutes heat would be minimal. It is zero on the Kelvin scale, equivalent to –273.15°C or –459.67°F. |
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First law of thermodynamics |
he branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy. |
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Second law of thermodynamics |
he branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy. |
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Heat engine |
a device for producing motive power from heat, such as a gasoline engine or steam engine. |
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Carnot efficiency |
Carnot's theorem, developed in 1824 by Nicolas Léonard Sadi Carnot, also called Carnot's rule, is a principle that specifies limits on the maximum efficiency any heat engine can obtain, which thus solely depends on the difference between the hot and cold temperature reservoirs. |
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Thermodynamics |
the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy. |
